CRICKET Australia's high performance chief Pat Howard concedes the spate of fast bowling injuries is ''not good enough'', saying a wide-ranging review of the management of pacemen is under way in a bid to stem the tide of breakdowns.

Three of the country's most promising young quicks - James Pattinson (side strain), Patrick Cummins (back) and Josh Hazlewood (foot) - have succumbed to injuries already this summer, while Ben Hilfenhaus (side strain), Ryan Harris (shoulder) and John Hastings (back) are also in rehabilitation.

Howard admitted, that with the benefit of hindsight, Cricket Australia had probably got it wrong by allowing Pattinson to play four Sheffield Shield matches in a row and then two Tests against South Africa last month. The Victorian broke down in Adelaide, possibly costing Australia victory and failing to make it through a summer unscathed for the second year in a row.

''Everybody is in this. The selectors are in it, the coaches are in it, the management is in it, the executives are in it. Everybody is involved in those discussions,'' Howard told Fairfax Media. ''That part of it is: Did they play enough, did they play too much? You look at volumes of training, volumes of playing and obviously preparation and leading in.

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''Every time things don't go to plan, you've got to ask the questions. To be simple, it's not good enough, we have too many injuries.''

The specific circumstances, and pre-injury workloads of all the bowlers who have gone down are being closely examined, but Cricket Australia already know that they probably erred with Pattinson, who 10 months earlier was picked for the Sydney Test against India despite warnings from sports scientists that he was an injury risk. He took 4-43 in the first innings at the SCG, then incurred a stress injury in his foot that sidelined him for two months.

''Maybe James Pattinson should have been pulled out of one of the Sheffield Shield games in the lead-up,'' Howard said.

''He had a big, big run of those, so he effectively played six games in a row.

''But it's walking the fine line and it's about building them up appropriately. And that same workload worked pretty well for Peter Siddle, but he is older.

''We have the youngest bowling unit in the world of the major countries. That's both a strength but it's obviously a risk and they are younger. In sport, people get injured. That's happened forever and it will continue to happen. What you're trying to do is minimise, not eliminate injuries.''

Knowing Australia's young crop of fast bowlers could be susceptible to fitness issues in England next winter, Howard is already planning contingency options.

There is an Australia A tour expected to feature bowlers not in the one-day team for the Champions Trophy that precedes the Ashes, and while only five quicks will be in the squad for that series at least two pacemen on the fringe will be planted with English counties as back-up.

The make-up of the cricket calendar this year - with the home Test campaign following the World Twenty20 tournament and the Twenty20 Champions League - has undoubtedly had an impact on bowlers' fitness, and that set of events will not occur in the same close succession again until 2016.

Cricket Australia will also consider which formats are played by particular players, with the likelihood there will be more separation of duties such as that of Siddle, who has taken a step back from the 50-over game.

But amid the sequence of breakdown there has been at least one success story for the CA sports scientists and high performance team. Mitchell Starc has been unbreakable across three formats for more than a year.

''As a young player he has been the most durable in the country over the past 12 to 15 months,'' Howard said.

''But he was injured before as well, and he was getting that reputation as well as someone that was injured, now he's not.''